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| author | Imre Deak <imre.deak@solidboot.com> | 2007-01-18 00:45:21 -0500 |
|---|---|---|
| committer | Dmitry Torokhov <dtor@insightbb.com> | 2007-01-18 00:45:21 -0500 |
| commit | de2defd96d7d92fe8b5f9cf2bfd385d8d4819923 (patch) | |
| tree | 191349b9480dca988f6d776db0a0b00ff10bffca /include/linux/spi | |
| parent | da970e69efb9fd0be0c23ace5bde42d4caf17b40 (diff) | |
| download | linux-de2defd96d7d92fe8b5f9cf2bfd385d8d4819923.tar.gz linux-de2defd96d7d92fe8b5f9cf2bfd385d8d4819923.tar.bz2 linux-de2defd96d7d92fe8b5f9cf2bfd385d8d4819923.zip | |
Input: ads7846 - optionally leave Vref on during differential measurements
On some LCDs leaving the Vref on provides much better readings.
Signed-off-by: Jarkko Oikarinen <jarkko.oikarinen@nokia.com>
Signed-off-by: Imre Deak <imre.deak@solidboot.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'include/linux/spi')
| -rw-r--r-- | include/linux/spi/ads7846.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h index 1663f940ca11..3387e44dfd13 100644 --- a/include/linux/spi/ads7846.h +++ b/include/linux/spi/ads7846.h @@ -14,6 +14,8 @@ enum ads7846_filter { struct ads7846_platform_data { u16 model; /* 7843, 7845, 7846. */ u16 vref_delay_usecs; /* 0 for external vref; etc */ + int keep_vref_on:1; /* set to keep vref on for differential + * measurements as well */ u16 x_plate_ohms; u16 y_plate_ohms; |